Basalt fiber composite offshore photovoltaic pull rod
By combining basalt fiber composite materials with stainless steel sleeves, the corrosion and structural reliability issues of photovoltaic rods in offshore photovoltaic power stations have been solved, enabling stable application in harsh environments and reducing usage and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RED BAY LAB
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-21
AI Technical Summary
The photovoltaic masts of offshore photovoltaic power stations are prone to corrosion and aging in harsh environments with high temperature, high humidity, high salt spray, and high ultraviolet radiation, resulting in reduced structural strength, high operating costs, and difficult maintenance.
The basalt fiber composite material tie rod is combined with a stainless steel sleeve and fixed by adhesive material, avoiding machining. The corrosion resistance and UV resistance of basalt fiber, together with purlins and locking mechanism, achieve a stable connection.
This improves the corrosion resistance and structural reliability of photovoltaic rods, reduces maintenance costs, extends service life, and avoids the need for additional anti-corrosion coatings and repair work.
Smart Images
Figure CN224538092U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of marine photovoltaic technology, and in particular relates to a marine photovoltaic tie rod made of basalt fiber composite material. Background Technology
[0002] Offshore photovoltaic power stations are an innovative power generation model that builds photovoltaic power stations on the ocean. This avoids competing with agriculture and urban construction for land, and the reflected light from the sea surface can enhance the absorption rate of photovoltaic panels, which helps to improve power generation efficiency.
[0003] However, the harsh marine environment, with its high temperature, high humidity, high salt spray, and high ultraviolet radiation, easily leads to corrosion and aging of steel structures such as photovoltaic rods, reducing structural strength and affecting their service life. Therefore, it is necessary to equip photovoltaic rods with anti-corrosion coatings, which is costly and easily scratched and damaged. The corresponding anti-corrosion repair work is extensive and difficult, further increasing the operation and maintenance costs. Summary of the Invention
[0004] This application provides a basalt fiber composite marine photovoltaic (PV) tie rod, aiming to at least partially solve the technical problems of unsatisfactory corrosion resistance and structural reliability, as well as high operating costs, of PV tie rods used in offshore PV power plants. Therefore,
[0005] One aspect of this application provides a basalt fiber composite marine photovoltaic tie rod, comprising:
[0006] Basalt fiber composite tie rod;
[0007] A stainless steel sleeve includes a cylinder body, which is sleeved on the end of the basalt fiber composite material tie rod, and the inner wall of the cylinder body and the basalt fiber composite material tie rod are filled with an adhesive material.
[0008] Purlins are connected to the stainless steel sleeve;
[0009] A locking mechanism is provided on the stainless steel sleeve and locks the purlin.
[0010] In some embodiments, a damping thread is formed on the inner wall of the cylinder, and the bonding material is filled between the damping thread and the basalt fiber composite tie rod.
[0011] In some embodiments, the damping threaded fitting engages with the outer circumferential surface of the basalt fiber composite tie rod.
[0012] In some embodiments, the damping thread is a trapezoidal thread, and the axial length of the trapezoidal thread is greater than or equal to 5 / 6 of the length of the cavity of the stainless steel sleeve.
[0013] In some embodiments, the damping thread has a crimping engagement depth of less than or equal to 1 mm and a crimping engagement length of greater than or equal to 50 mm in the basalt fiber composite tie rod.
[0014] In some embodiments, the inner diameter of the cylinder is greater than or equal to 1.2 times the diameter of the Wuyan fiber composite tie rod.
[0015] In some embodiments, the purlin is a basalt fiber composite purlin.
[0016] In some embodiments, the stainless steel sleeve further includes a solid screw rod, which is coaxially connected to the cylinder body. The purlin is sleeved on the solid screw rod through a mounting hole, and the outer diameter of the cylinder body is larger than the inner diameter of the mounting hole, and the inner diameter of the mounting hole is larger than the outer diameter of the solid screw rod.
[0017] The locking mechanism includes a locking nut, which is screwed onto the solid screw and abuts against the side of the purlin away from the cylinder.
[0018] In some embodiments, a conical connecting rod is provided between the cylinder and the solid screw, and the small diameter end of the conical connecting rod is integrally formed with the solid screw.
[0019] In some embodiments, the basalt fiber accounts for 75% to 80% of the weight of the basalt fiber composite marine photovoltaic tie rod.
[0020] The embodiments of this application have at least the following beneficial effects:
[0021] The basalt fiber composite marine photovoltaic tie rod provided in this application includes a basalt fiber composite tie rod, a stainless steel sleeve, a purlin, and a locking mechanism. The basalt fiber composite tie rod is embedded in the stainless steel sleeve, and the sleeve is filled with adhesive material to achieve bonding and fixation between the two. This avoids damage to the internal structure of the rod, thereby ensuring the structural strength of the rod to meet the force requirements of the tie rod. At the same time, the corrosion resistance and high UV resistance of the basalt fiber composite material can be utilized to maintain the structural reliability of the tie rod under extreme conditions. On the other hand, the basalt fiber composite tie rod does not require additional anti-corrosion coatings or other functional components and corresponding repair and maintenance, thereby greatly reducing the equipment use and subsequent maintenance costs. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 A schematic diagram of the structure of the basalt fiber composite marine photovoltaic tie rod in an embodiment of this application is shown;
[0024] Figure 2 It shows Figure 1 A schematic diagram of the stainless steel sleeve of the basalt fiber composite marine photovoltaic tie rod.
[0025] Figure label:
[0026] 1-Basalt fiber composite tie rod;
[0027] 2-Stainless steel sleeve, 21-Cylinder body, 211-Cylinder cavity, 212-Damping thread, 22-Solid screw, 23-Conical connecting rod;
[0028] 3-Purlins;
[0029] 4-Locking mechanism, 41-Locking nut, 42-Washer. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0031] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0032] This application is described below with reference to the accompanying drawings and specific embodiments:
[0033] Offshore photovoltaic (PV) tie rods are fasteners used in offshore PV power plants, primarily applying axial tensile force to meet the requirements of traction and fixation. However, the marine environment is a harsh environment characterized by strong corrosion, high temperature, high humidity, high salt spray, and high ultraviolet radiation. Traditional metal tie rods are prone to corrosion and aging, resulting in short service life and poor reliability. Furthermore, various functional coatings are typically applied to the tie rods, requiring regular maintenance, which leads to extremely high assembly, use, and maintenance costs.
[0034] Therefore, this application provides a basalt fiber composite marine photovoltaic tie rod, which aims to solve, to some extent, the technical problems of unsatisfactory corrosion resistance and structural reliability, and high operating costs of photovoltaic tie rods used in marine photovoltaic power stations; and achieve the technical effects of improving corrosion resistance, structural reliability, and reducing operating and maintenance costs.
[0035] See Figure 1 and Figure 2 In some embodiments, the basalt fiber composite marine photovoltaic tie rod can utilize the corrosion resistance and ultraviolet radiation resistance of the basalt fiber composite material to improve the structural reliability and functional stability of the tie rod in harsh marine environments. Combined with specific fixing methods, the impact of machining on the structural strength and reliability of the basalt fiber composite marine photovoltaic tie rod is reduced, thereby obtaining a tie rod structure that can be used in harsh marine environments, achieving a more stable and reliable structure and a longer service life compared to steel structure tie rods.
[0036] Specifically, the basalt fiber composite marine photovoltaic rod includes a basalt fiber composite rod 1, a stainless steel sleeve 2, a purlin 3, and a locking mechanism 4; the end of the basalt fiber composite rod 1 is sleeved with the stainless steel sleeve 2 and fixed by adhesive material; the purlin 3 is connected to the stainless steel sleeve 2, and the locking mechanism 4 is connected to the stainless steel sleeve 2 and locks the purlin 3.
[0037] The basalt fiber composite material tie rod 1 can be configured as a rod with a certain length, and through the matching of basalt fiber and weather-resistant polyurethane and other auxiliary materials inside, it can have stable tensile strength in the axial direction, thereby meeting the functional requirements of the tie rod.
[0038] The stainless steel sleeve 2 has a cylindrical body 21, which has a cavity 211 of a certain length inside. The end of the basalt fiber composite material tie rod 1 can be embedded in the cavity 211 of the cylindrical body 21, and the gap between the end of the basalt fiber composite material tie rod 1 and the inner wall of the cylindrical body 21 is filled by adhesive material, thereby bonding the two together to achieve stable fixation.
[0039] It is worth noting that the stainless steel sleeve 2 serves as the connecting medium for the basalt fiber composite tie rod 1, connecting it to other functional components. This eliminates the need for tapping or other machining processes on the basalt fiber composite tie rod 1 to form a fixed structure. The adhesive bonding method avoids damage to the internal structure of the basalt fiber composite tie rod 1 caused by machining, helping to maintain its structural strength. This balances the tie rod's corrosion resistance, UV radiation resistance, and structural strength, ensuring stable application in harsh marine environments.
[0040] The purlin 3 is used to connect to the tensioning body of various functional equipment, that is, to apply the tension on the basalt fiber composite material tie rod 1 to the connected equipment body. Correspondingly, the purlin 3 can be connected to the stainless steel sleeve 2 to transmit the tension on the basalt fiber composite material tie rod 1 to the equipment body.
[0041] The locking mechanism 4 serves as the locking structure for the purlin 3, and is used to stably lock the purlin 3 onto the basalt fiber composite material tie rod 1. It can also adjust the locking position to a certain extent, thereby achieving position adjustment of the purlin 3.
[0042] In some embodiments, in order to enhance the bonding strength of the basalt fiber composite tie rod 1, a damping thread 212 can be provided on the inner wall of the cylinder 21. The bonding material is filled between the damping thread 212 and the basalt fiber composite tie rod 1, thereby enhancing the bonding strength between the bonding material and the metal sleeve by using the damping thread 212, so as to improve the fixing stability of the basalt fiber composite tie rod 1 and the stainless steel sleeve 2.
[0043] In some embodiments, in order to further enhance the fixing strength between the basalt fiber composite material tie rod 1 and the stainless steel sleeve 2, the stainless steel sleeve 2 and the basalt fiber composite material tie rod 1 can be pressed together radially by a crimping process, so that the damping thread 212 can form an engagement state with the outer peripheral surface of the basalt fiber composite material tie rod 1, increasing the difficulty of axial disengagement and expanding the bonding area of the adhesive material to a certain extent, thereby improving the overall fixing strength.
[0044] It is worth noting that under the action of external pressure, the damping thread 212 engages with the outer circumferential surface of the basalt fiber composite material tie rod 1 through natural deformation. This does not cut off the internal fiber structure of the basalt fiber composite material tie rod 1, but only changes the fiber distribution density, thereby reducing structural damage along the axial tension direction and ensuring the uniformity of tensile strength.
[0045] The bonding material can form a stable and strong static pressure between the damping thread 212 and the naturally deformed portion on the outer circumferential surface of the basalt fiber composite tie rod 1, preventing axial movement between the two, thereby greatly improving the axial connection strength and enhancing the functional stability and reliability in the tensile direction.
[0046] Generally, the cylinder 21 and the basalt fiber composite material tie rod 1 are first bonded and fixed with adhesive material, and then the cylinder 21 and the basalt fiber composite material tie rod 1 are compressed radially by a crimping machine, so that the damping thread 212 is pressed into the interior of the basalt fiber composite material tie rod 1. This avoids the material strength reduction or mechanical damage that may be caused by the traditional tapping bolt connection method, and further improves the durability and safety of the tie rod and the connection node.
[0047] In some embodiments, in order to limit the damage of the damping thread 212 to the basalt fiber composite material tie rod 1 and to take into account the locking effect, the pressing and engaging depth of the damping thread 212 and the outer peripheral surface of the basalt fiber composite material tie rod 1 can be controlled to 1 mm or slightly less than 1 mm.
[0048] In some embodiments, considering that the basalt fiber composite material tie rod 1 is fixed by adhesive bonding, in order to ensure the fixing strength, the crimping engagement length of the damping thread 212 is greater than or equal to 50mm.
[0049] In some embodiments, in order to reduce the damage of the damping thread 212 to the outer peripheral surface of the basalt fiber composite material tie rod 1, the damping thread 212 can be a trapezoidal thread, that is, the thread tooth tip is set as a platform surface, thereby avoiding shearing the outer peripheral surface of the basalt fiber composite material tie rod 1, reducing the risk of cutting basalt fibers, and helping to maintain the traction reliability of the basalt fiber composite material tie rod 1.
[0050] In some embodiments, in order to improve the connection stability between the stainless steel sleeve 2 and the basalt fiber composite material tie rod 1, the stainless steel sleeve 2 and the basalt fiber composite material tie rod 1 can be kept to have a certain length of bonding area.
[0051] Specifically, the axial length of the trapezoidal thread is greater than or equal to 5 / 6 of the length of the cavity 211 of the stainless steel sleeve 2. That is to say, in the length direction, the area covered by the damping thread 212 occupies at least 5 / 6 of the inner wall of the cavity 211, thereby satisfying the need for fixing strength and also reducing the size of the stainless steel sleeve 2 to a certain extent.
[0052] In some embodiments, in order to improve the bonding strength, a certain amount of adhesive material needs to be maintained between the inner walls of the basalt fiber composite material tie rod 1 and the stainless steel sleeve 2. For this purpose, it is necessary to ensure that a certain gap is maintained between the inner walls of the basalt fiber composite material tie rod 1 and the stainless steel sleeve 2 to accommodate the adhesive material.
[0053] Therefore, the inner diameter of the cylinder 21 is greater than or equal to 1.1 to 1.3 times the diameter of the Wuyan fiber composite material tie rod, and can be specifically set to 1.2 times.
[0054] In some embodiments, to facilitate the connection and adjustment of the locking position between the stainless steel sleeve 2 and the locking mechanism 4, the stainless steel sleeve 2 and the locking mechanism 4 may be connected by threads.
[0055] Specifically, the stainless steel sleeve 2 may further include a solid screw 22, which is coaxially connected to the cylinder 21. The locking mechanism 4 includes a locking nut 41, which is screwed onto the solid screw 22 and is located on the side of the purlin 3 away from the cylinder 21, thereby restricting the purlin 3 from detaching from the stainless steel sleeve 2.
[0056] The purlin 3 has mounting holes on its main body. The purlin 3 is fitted onto the solid screw 22 through the mounting holes and, in the assembled state, is tightened against the locking nut 41 to achieve position locking.
[0057] Generally, a washer 42 or similar material can be placed between the locking nut 41 and the purlin 3 to distribute the force and prevent excessive local stress on the purlin 3, which could lead to deformation. Furthermore, the solid screw 22 possesses strong structural strength and can maintain morphological stability under stress, thereby ensuring the stability of the basalt fiber composite marine photovoltaic tie rod.
[0058] In some embodiments, considering that mechanical damage poses a significant threat to the structural strength of the basalt fiber composite tie rod 1, in order to prevent the purlin 3 from shifting and damaging the basalt fiber composite tie rod 1, the inner diameter of the mounting hole of the purlin 3 can be set to be smaller than the outer diameter of the cylinder 21 to prevent the purlin 3 from sliding onto the basalt fiber composite tie rod 1.
[0059] Of course, the inner diameter of the mounting hole of the purlin 3 can be set to be slightly larger than the solid screw 22 to avoid radial displacement of the purlin 3 relative to the solid screw 22 and to avoid uneven force caused by changes in posture.
[0060] In some embodiments, considering that the outer diameters of the cylinder 21 and the solid screw 22 are different, in order to avoid stress concentration at the end of the solid screw 22 and affect the structural reliability, a smoothly variable diameter connecting rod can be provided between the cylinder 21 and the solid screw 22 to connect the cylinder 21 and the solid screw 22.
[0061] Specifically, a conical connecting rod 23 is provided between the cylinder 21 and the solid screw 22. The smaller end of the conical connecting rod 23 is smoothly connected to the solid screw 22, and the larger end is smoothly connected to the cylinder 21.
[0062] In some embodiments, the cylinder 21, the solid screw 22, and the conical connecting rod 23 are configured as a single piece and integrally formed.
[0063] In some embodiments, the solid screw 22 may be configured with an M10 standard thread and a length of 90±5mm. After the locking nut 41 is tightened, the end of the screw protrudes for a longer length, about 15-18mm, to provide greater tightening force and tensile strength, withstand larger loads, and ensure the safety and reliability of the connection.
[0064] The tapered connecting rod 23 has a length of 10±2mm, of which the variable diameter section is about 5mm, and the remaining rod body is a matching rod segment with the specifications of the solid screw 22 and the cylinder 21, which is used to prevent stress concentration at the root of the bolt and improve the utilization efficiency of the connection node.
[0065] The cylinder 21 has a length of 65mm, an outer diameter of φ16mm, an inner diameter of φ12.5mm, a wall thickness of 1.75mm, and an outlet with an M14 internal trapezoidal thread within a 50mm range, with a length of 50mm.
[0066] In some embodiments, the stainless steel sleeve 2 may be made of 316L stainless steel, which has both excellent corrosion resistance and formability, and in particular, good resistance to chloride corrosion. Therefore, it is suitable for use in harsh marine environments. Its strength is 1.3 times that of ordinary steel, further improving the overall safety performance of the structure.
[0067] In some embodiments, the basalt fiber composite marine photovoltaic tie rod has a weight ratio of 75% to 80% and a weight ratio of other composite materials such as weather-resistant polyurethane of 20% to 25%, thereby taking into account both axial tensile strength and overall composite strength.
[0068] In some embodiments, the purlin 3 may also be made of basalt fiber composite material; thus, the basalt fiber composite tie rod 1 and the purlin 3 do not require complex maintenance during the operation and maintenance period, effectively ensuring stable and reliable performance throughout the entire life cycle of the structure and extending the structural life.
[0069] The embodiments of this application have at least the following beneficial effects:
[0070] The basalt fiber composite marine photovoltaic tie rod provided in this application includes a basalt fiber composite tie rod, a stainless steel sleeve, a purlin, and a locking mechanism. The basalt fiber composite tie rod is embedded in the stainless steel sleeve, and the sleeve is filled with adhesive material to achieve bonding and fixation between the two. This avoids damage to the internal structure of the rod, thereby ensuring the structural strength of the rod to meet the force requirements of the tie rod. At the same time, the corrosion resistance and high UV resistance of the basalt fiber composite material can be utilized to maintain the structural reliability of the tie rod under extreme conditions. On the other hand, the basalt fiber composite tie rod does not require additional anti-corrosion coatings or other functional components and corresponding repair and maintenance, thereby greatly reducing the equipment use and subsequent maintenance costs.
[0071] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0072] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0073] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0074] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0075] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0077] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0078] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A basalt fiber composite marine photovoltaic tie rod, characterized in that, include: Basalt fiber composite tie rod; A stainless steel sleeve includes a cylinder body, which is sleeved on the end of the basalt fiber composite material tie rod, and the inner wall of the cylinder body and the basalt fiber composite material tie rod are filled with an adhesive material. Purlins are connected to the stainless steel sleeve; A locking mechanism is provided on the stainless steel sleeve and locks the purlin.
2. The basalt fiber composite marine photovoltaic tie rod as described in claim 1, characterized in that, The inner wall of the cylinder is provided with a damping thread, and the bonding material is filled between the damping thread and the basalt fiber composite material tie rod.
3. The basalt fiber composite marine photovoltaic tie rod as described in claim 2, characterized in that, The damping threaded fitting engages with the outer circumferential surface of the basalt fiber composite tie rod.
4. The basalt fiber composite marine photovoltaic tie rod as described in claim 3, characterized in that, The damping thread is a trapezoidal thread, and the axial length of the trapezoidal thread is greater than or equal to 5 / 6 of the length of the stainless steel sleeve cavity.
5. The basalt fiber composite marine photovoltaic tie rod as described in claim 3, characterized in that, The damping thread has a crimping engagement depth of less than or equal to 1 mm and a crimping engagement length of greater than or equal to 50 mm in the basalt fiber composite tie rod.
6. The basalt fiber composite marine photovoltaic tie rod as described in claim 3, characterized in that, The inner diameter of the cylinder is greater than or equal to 1.2 times the diameter of the Wuyan fiber composite material tie rod.
7. The basalt fiber composite marine photovoltaic tie rod as described in claim 1, characterized in that, The purlins are basalt fiber composite material purlins.
8. The basalt fiber composite marine photovoltaic tie rod as described in claim 1, characterized in that, The stainless steel sleeve also includes a solid screw rod, which is coaxially connected to the cylinder body. The purlin is sleeved on the solid screw rod through a mounting hole, and the outer diameter of the cylinder body is larger than the inner diameter of the mounting hole, while the inner diameter of the mounting hole is larger than the outer diameter of the solid screw rod. The locking mechanism includes a locking nut, which is screwed onto the solid screw and abuts against the side of the purlin away from the cylinder.
9. The basalt fiber composite marine photovoltaic tie rod as described in claim 8, characterized in that, A tapered connecting rod is provided between the cylinder and the solid screw, and the small diameter end of the tapered connecting rod is integrally formed with the solid screw.